PlumX Metrics
Embed PlumX Metrics

Raman scattering study of phase transitions in (formula presented) mixed crystals

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 59, Issue: 17, Page: 11333-11338
1999
  • 2
    Citations
  • 0
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    2
    • Citation Indexes
      2

Article Description

Temperature dependence of Raman scattering spectra in the cesium-ammonium dihydrogen arsenate (CADA-(Formula presented) (Formula presented) mixed crystal was observed to study anomalies associated with the dipole glass freezing phenomena in the system. (Formula presented) symmetry internal vibrations of arsenate ions were found to deviate from the normal temperature dependence of the third and fourth order anharmonic phonon-phonon interactions at around (Formula presented), which was ascribed to the onset of the short range random potential fixing of protons. The (Formula presented) symmetry soft mode derived from the harmonic oscillator coupled mode analysis was found to be a relaxational type characterized by (Formula presented) with (Formula presented), where (Formula presented) corresponds to the relaxation bandwidth of the soft mode. The large difference between the two anomaly temperatures was attributed to the enhanced effective piezoelectric constant associated with the electrostrictive contributions from the random local cluster polarizations. © 1999 The American Physical Society.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know